The Russian military's infamous Sandworm crew was likely behind cyberattacks on American and European water facilities that, in at least one case, caused a tank to overflow.
Pro-Russian hackers attack US water utilities
In a report today, Google's Mandiant threat-hunting team linked the intelligence equipment to disruptions at water and hydroelectric plants earlier this year. This includes a series of attempts to disrupt Texas water facilities via remote control programs.
At least one of those breaches caused a system failure, causing the water tank to overflow, Mandiant noted in its latest filing [PDF].
Sandworm, believed to work for Russia's military intelligence agency GRU and now labeled APT44 by Mandiant, has strongly supported the ongoing invasion of Ukraine.